|“||Kaiju are tragic beings. They're born too tall, too strong, and too heavy. They're not evil by choice. That is their tragedy.||„|
Kaiju are typically modeled after conventional animals, mythological creatures, and sometimes even plants; however, there are more exotic examples. Choujin Sentai Jetman features monsters based on traffic lights, faucets, and tomatoes; Kamen Rider Super-1 includes a whole army of monsters based on household objects such as umbrellas and utility ladders.
While the term kaiju is used in the West to describe monsters from tokusatsu and Japanese folklore, monsters like vampires, werewolves, Frankenstein's Monster, mummies and zombies would fall into this category (Frankenstein's Monster was once a daikaiju in the film Frankenstein vs. Baragon, which was produced by Toho).
Kaiju are sometimes depicted as cannon fodder serving a greater evil. Some kaiju are elite warriors which serve as the right-hand man to the greater villain and are destroyed by the heroic forces. Others have a neutral alignment, only seeking to destroy buildings and other structures.
During the early eras of tokusatsu, "heroic" monsters were seen in daikaiju eiga films, and it wasn't until later when television tokusatsu productions began using kaiju which aided the hero, saved civilians, or demonstrated some kind of complex personality. These kaiju adopted many classic monster traits, appearing as the "misunderstood creature."